feat: nested translation + fix undefined kind + add tests

.babelrc

@@ -0,0 +1,12 @@
+{
+  "presets": [
+    "@babel/env",
+    ["@babel/typescript", {"allowNamespaces": true}]
+  ],
+  "plugins": [
+    ["@babel/plugin-proposal-decorators", {"legacy": true}],
+    "@babel/plugin-transform-runtime",
+    "@babel/proposal-class-properties",
+    "@babel/proposal-object-rest-spread"
+  ]
+}

.travis.yml

@@ -20,6 +20,7 @@ before_script: greenkeeper-lockfile-update
 
 script:
   - npm run build
+  - npm run test
 
 after_script: greenkeeper-lockfile-upload
 

mocks/Extend.ts

@@ -0,0 +1,15 @@
+import * as React from "react";
+import {SimpleTranslation} from "./Simple";
+
+interface ExtendTranslation extends SimpleTranslation {
+  d: string;
+  e: string;
+}
+
+interface IProps {
+  something: string;
+  somethingElse: number;
+  translation: ExtendTranslation;
+}
+
+export class Extend extends React.Component<IProps> {}

mocks/Infer.ts

@@ -0,0 +1,15 @@
+import * as React from "react";
+
+interface Customer {
+  age: number;
+  firstName: string;
+  lastName: string;
+}
+
+interface IProps {
+  something: string;
+  somethingElse: number;
+  translation: Record<keyof Customer, string>;
+}
+
+export class Infer extends React.Component<IProps> {}

mocks/Nested.ts

@@ -0,0 +1,36 @@
+import * as React from "react";
+
+export interface Nested {
+  translation: {
+    a: string;
+    b: string;
+  }
+}
+
+export interface DoubleNested {
+  something: {
+    translation: {
+      c: string;
+      d: string;
+    }
+  }
+}
+
+export interface TripNested {
+  something: {
+    somethingElse: {
+      translation: {
+        e: string;
+        f: string;
+      }
+    }
+  }
+}
+
+interface IProps {
+  nested: Nested;
+  doubleNested: DoubleNested;
+  tripleNested: TripNested;
+}
+
+export class Nested extends React.Component<IProps> {}

mocks/NoProps.ts

@@ -0,0 +1,3 @@
+import * as React from "react";
+
+export class NoProps extends React.Component {}

mocks/Simple.ts

@@ -0,0 +1,15 @@
+import * as React from "react";
+
+export interface SimpleTranslation {
+  a: string;
+  b: string;
+  c: string;
+}
+
+interface IProps {
+  something: string;
+  somethingElse: number;
+  translation: SimpleTranslation;
+}
+
+export class Simple extends React.Component<IProps> {}